[Event "Olympiad-22"]
[Site "Haifa"]
[Date "1976.10.27"]
[Round "3(2)"]
[White "Castro Rojas, Oscar Humberto"]
[Black "Olafsson, Helgi"]
[Result "1/2-1/2"]
[WhiteElo "2380"]
1. Nf3 Nf6 2. c4 g6 3. b4 Bg7 4. Bb2 O-O 5. g3 c6 6. Bg2 a5 7. bxa5 Qxa5 8. O-O d6 9. h3 Nbd7 10. Nd4 Nb6 11. Bc3 Qc5 12. d3 Na4 13. e3 d5 14. Qb3 dxc4 15. dxc4 Nxc3 16. Nxc3 e5 17. Nde2 Qa5 18. Rfd1 Ra7 19. Rab1 Bf5 20. Rb2 Rd8 21. Rxd8+ Qxd8 22. Na4 Nd7 23. Bf1 Be6 24. Qd1 Bf6 25. Nac3 Nc5 26. Qxd8+ Bxd8 27. Nc1 Ba5 28. Nb1 Na4 29. Rc2 Nc5 30. g4 Kf8 31. Nd2 Bxd2 32. Rxd2 Ra4 33. Nb3 Nxb3 34. axb3 Rb4 35. Rd3 Ke7 36. f4 e4 37. Rc3 Kd6 38. g5 b5 39. Bg2 bxc4 40. bxc4 Rxc4 41. Rxc4 Bxc4 42. Bxe4 Be6 43. h4 Bf5 44. Bf3 c5 45. Kf2 c4 46. e4 Bd7 47. Ke3 Kc5 48. h5 1/2-1/2